So far all of my customers who are using hydrogen fuel cells are not thrilled with it. Although the solution looks and sounds good on paper, be sure to do your homework before moving forward with this solution. The two main complaints I have heard from customers are that the upfront costs of getting setup are through the roof (many hidden costs) and the maintenance (upkeep) of the fuel cells thus far has been a nightmare! One customer has such a high level of maintenance on their fuel cells that a technician from the fuel cell manufacture is onsite 40+ hours a week.
Anyone who is looking at hydrogen fuel cells as a solution, I would strongly recommend also look into BYD (Iron Phosphate battery) forklifts as their solution provides the same perks as hydrogen but without all of the headaches.